Measuring device.



W. GIESE.

IVIEASURING DEVICE. APPLICATION FILED' OCT. 31 1914.

2 SHEETS-SHEET I..

THE NORRIS PETERS C0.. PHOTO-LITHO.. wAsHlNGroN. D. c

W. GIESE.

MEASURING DEVICE.

APPucATmN man 0121.31. 1914.

Patented .111119 15, 1915.

2 SHEETS-SHEET 2.

THE NORRIS PETERS co., PHO1D-LITHCL, WASHINGTON. D. CA

WILLY GESE, OF ROUND TOP, TEXAS.

MEASURING DEVICE.

Specification of Letters Patent.

Patented J une 15, 1915.

AppIication filed ctober 31, 1914. Serial No. 869,639.

To all whom t may concern.'

Be it known that I, WILLY Gmsn, a citizen of the United States of America, residing at Round Top, in the county of Fayette and State of Texas, have invented certain new and useful Improvements in Measuring Devices, of which the following is a specilication, reference being had therein to the accompanying drawing.

This invention relates to a measuring'device and has for its principal object the production of a device which is particularly adapted to be used for drawing circles upon the surface by the operation of the operating members.

Another object of this invention is the production of a measuring device which is adapted to draw circles and which is so formed as to allow the chalk carrying portion to be adjusted or as to diminish or increase the size of the circle as desired.

Still another object of this invention is the production of a plurality of gears which are beveled so as to allow the chalk carrying member to be operated upon the turning of a handle while this handle is so arranged as to allow the chalk carrying member to pass thereby without interference.

With these and other objects in view this invention consists of certain novel combinations, constructions, and arrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawings Figure 1 is a detailed perspective view of the measuring device illustrating the manner in which the same is used. Fig. 2 is a central vertical section through the invention, portions of the same being Vbroken away. Fig. 3 is a section taken on line 3-3 of Fig. 2 looking in the direction of the arrow. Fig. 4 is a section taken on the line 4--4 of Fig. 2 looking in the direction of the arrow. Fig. 5 is a detailed perspective view of the chalk carrying member. Fig. 6 is a detailed perspective view of the arm supporting member. Fig. 7 is a longitudinal sectional view taken through the chalk supporting member and curved finger.

Referring to the accompanying drawings by numerals 1 designates the central rod which is enlarged adjacent its lower end as shown at 2 to form a supporting shoulder 3 and terminates in the'beveled point 4. The supporting base 5 is positioned upon the enlarged portion 2 of the rod 1 and has the diverging legs 6 extending therefrom so as to support the integral ring 7. By allowing this ring 7 to rest upon the support the rod 1 will be supported in a perpendicular posi tion so as to allow the beveled point 4 to rest upon a certain desired point or center when the device is in operation. The handle 8 is carried upon the upper end of the rod 1 for facilitating the carrying of the device from place to place. The supporting frame 9 has the L-shaped portion 10 extending therefrom which is reinforced by the rib 11 and has upon its outer portion the integral bearing 12. This bearing 12 has the transverse opening 13 through which the rotatable shaft 14 is adapted to pass and upon the outer end of the shaft 14 there is carried a crank 15 having the pin 16 threaded into engagement therewith for supporting the loose handle 17. Tt will be seen that by gripping this loose handle 17 and swinging the crank 15 the shaft 14 will be rotated since the retaining pin 18 passes transversely through the crank and the shaft 14. The beveled gear 20 having a neck 21 extending therefrom is held in a set engagement with the inner end of the shaft 14 by means of the pin 22 which passes through the neck 21 and the shaft 14 adjacent the inner end thereof.

Another beveled gear 23 having a neck 24 is positioned upon the post 1 so as to allow the neck 24 to rest upon the shoulder 3 of the rod 1 and upon the upper surface of the stand 5. This beveled gear 23 meshes with the beveled gear 2O whereby when the shaft is rotated by the crank 15 the beveled gear 20 will impart rotary motion to the beveled gear 23. The arm supporting member 25 comprises a collar 26 which supports a bifurcated end 27. This collar 26 embraces the neck 24 of the beveled gear 23 and is held in engagement with the neck of the beveled gear 23 by means of the set screw 28. The bifurcated end 27 is adapted to carry the elongated arm 29 by means of the pivot pin 3Q which passes through the alined apertures 31 of the bifurcated end 27 and passes through the arm 29. Upon this arm 29 there is carried a sectional sleeve 32 which is held in a set position upon the arm 29 by means of the set screw 33. This sectional sleeve 32 is provided with parallel spaced lugs 34 between which ts the curved finger 35. This curved linger 35 is held in position by means of the pivot pin 36. A flat spring 37 is secured to the upper portion of the sectional sleeve 32 by means of the rivet 38 so as to bear upon the finger 35 and eXert a pressure upon the finger for normally urging the same in one direction. The free end of this curved finger 35 is adapted to carry the chalk supporting member which comprises body 43 having parallel spaced lips 44. This body 43 is bowed so as toeasily grip a piece of chalk and is positioned upon the notched portion 39 of the finger 35. A rivet 45 passes through the body 43 and the finger 35 for retaining the chalk supporting body in position. By the use of the lips 4 4 it will be seen that the body 43Y may be expanded slightly so as to allow the chalk to be easily moved when it is desired to insert or remove a piece of chalk 46. It is, of course, obvious that since the' arm 29 `is pivotally supported, the tendency of the outer end is to swing downwardly. The finger 35 is also pivotally secured to the sleeve 32 carried by the arm 29 and therefore, if the spring 37 were not used, the arm 29 would drag at its outer end while the chalk carried by the chalk supporting member of the finger 35 would not be provided with sufficient pressure to b e caused to make even heavy lines. The spring 3 7, however, is of suiiicient strength to hold the arm 29v elevated by bearing upon the nger 35 and urging the same toward the supporting surface upon which the device is positioned.

When this device is in use the chalk`46 is placed within the body 43. The sectional sleeve 32 may then be moved to a desired point upon the arm 29 and then held in position by means of the set screw 33. The point 4 of the rod 1 may then be placed upon Vthe central point which will be the central aXis of the circle. The crank 15 may then be moved by the loose handle 17 vso as to rotate the shaft 14. When this shaft is rotated, rotary motion will be imparted to the beveled gear 20 and by means of this beveled gear to the other beveled gear 23.

As this beveled gear is rotated the arm supporting member as disclosed in Fig. 6 will be rotated for swinging the arm 29 and since the sleeve will support the pin 36 in a set position upon the arm 29, the chalk will be drawn in a circle. The spring 37 will bear upon the finger 35 so as to eXert a substantially uniform pressure upon the chalk as the device is in operation. Therefore, after the arm 29 swings to form the complete circle of 360o the chalk which is carried by the chalk supporting member will have drawn a line to form a circle.

It is to be noted that the gears are formed so as to allow the crank 15 to be raised to lits highest position when the arm 29 is Y passing thereunder and as the crank 15 is swung to its lowest position the arms 29 will ber positioned upon the opposite side of the rod 1 as disclosed in Fig. 2 and therefore the arm may easily rotate without interference from the crank 15.

F rom the foregoing description it will be seen that an efiicient device has been produced which may be placed against a blackboard or any support and by the rotation of the gears the circle may be quickly made or several circles may be quickly made without any variance in the size of the circles while the adjusting means will allow the ci rcles to be diminished in size or increased if necessary.

It will be seen that the frame 9 is supported by means of a pin 49 which passes through the frame 9 and post 1. 1t will also be noted that the arm 29 is provided with indicating marks 29 at spaced intervals thereon whereby the radius of the circle to be drawn may be easily determined Vby moving the sleeve 32 to a desired mark.

In this manner the size of the circle may be easily determined.

What I claim is 1. A device of the class described comprising a rod, a beveled gear carried upon said rod, an arm secured to said beveled gear, a supporting means carried by said rod, a beveled gear supported by said supporting means and meshing with said firstmentioned bevel gear, means for rotating said last-mentioned beveled gear whereby rotary motion will be imparted to said firstmentioned beveled gear for swinging said arm in a circle.

2. A device of the class described comprising a supporting post, a beveled gear carried by said post, an arm supporting member secured to said beveled gear, an

arm secured to said arm supporting member,

a chalk carrying member mounted upon said arm, a supporting frame 'held in a set engagement with said post, a beveled gear supported by said supporting frame, said last-mentioned beveled gear meshing with said rst-mentioned beveled gear, means for rotating said last mentioned beveled gear whereby rotary motion will be imparted to said first-mentioned beveled gear for rotating said arm thereby cansing said chalk carrying member to be swung in a circle.

3. A device of the class described comprising a post, a beveled gear carried by said post, an arm supporting member carried by said beveled gear, an arm secured to said arm supporting member, a chalk supporting member carried by said arm, a frame secured to said post and provided with an integral L-shaped portion terminating in an integral bearing, a shaft passing through said bearing, a beveled gear secured to the inner end of said shaft, said last-mentioned beveled gear meshing with said rst-mentioned beveled gear, means for rotating said shaft whereby rotary motion will be imparted to said gears for swinging said arm and causing said chalk sup porting member to be swung in a circle.

4. A device of the class described comprising a supporting post, a beveled gear carried by said post, an arm-supporting member secured to said beveled gear, an arm pivotally secured to said arm-supporting member, a chalk-carrying member slidably mounted upon said arm and lbeing adapted to be retained in an adjusted set position, la supporting frame carried by said post, a beveled gear carried by said supporting frame, said last-mentioned beveled gear meshing with said first-mentioned beveled gear, means for rotating said lastmentioned beveled gear, whereby rotary motion will be imparted to said rst-mentioned beveled gear for swinging said arm in a circle, thereby allowing the chalk-carrying member to hold a piece of chalk in engagement with a support for drawing various sized circles.

5. A device of the class described comprising a supporting post, a beveled gear carried by said post, an arm-supporting member secured to said beveled gear, an arm pivotally secured to said arm-supporting member, a chalk-carrying member carried upon said arm, said chalk-carrying member comprising a sleeve, a set screw passing through said sleeve and engaging said arm, whereby the chalk-carrying member may be held in an adjusted set position upon said arm, a finger pivotally secured to said sleeve, a spring iixedly secured to said sleeve and bearing upon said finger for urging said inger in one direction with suiicient force to support said arm, a chalksupporting member carried by the free end of said nger, a supporting frame carried by said post, a beveled gear carried by said supporting frame, said last-mentioned beveled gear meshing with said irst-mentioned beveled gear, means for rotating said lastmentioned beveled gear, whereby rotary motion will be imparted to said irst-mentioned beveled gear for swinging said arm in a circle, thereby allowing the chalk-carrying member to hold a piece of chalk in engagement with a support for drawing various sized circles.

6. A device of the class described comprising a rod having a pointed lower end, a supporting base secured to said rod, said base having diverging legs extending therefrom and carrying an integral ring, whereby the pointed end of the post may be positioned at the central portion of a supposed circle while the ring will rest upon a support for holding the post at right angles to the support, a beveled gear carried upon said rod, an arm secured to said beveled gear, a supporting means carried by said rod, a beveled gear carried by said supporting means vand meshing with said first-mentioned beveled gear, means for rotating said last-mentioned bevel gear, whereby rotary motion will be imparted to said first-mentioned bevel gear for swinging said arm in a circle.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

WILLY GIESE.

Witnesses:

GEO. H. FRICKE, FRANK WAGNER.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, JD. C. 

